Characidium xanthopterum Silveira, Langeani, da Graça, Pavanelli & Buckup, 2008
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Family:  Crenuchidae (South American darters), subfamily: Characidiinae
Max. size:  4.73 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: tributaries of the rio Paranaíba drainage, upper rio Paraná basin, and tributaries to the upper rio Tocantins basin in Brazil.
Diagnosis:  Dorsal soft rays (total): 10-12; Anal soft rays: 8-9; Vertebrae: 32-33. Distinguished from other species of genus Characidium by the bright yellow fin coloration, and by the absence of conspicuous dark bars along the sides of body in individuals larger than 3.5 cm SL (vs. dark bars or marks present on the sides of the body in specimens of all sizes in the remaining species of Characidium) (Ref. 76854). Description: D ii,8, ii,9, ii,10; A ii,6, ii,7; P iii,8, iii,9, iii,10; V i+8 (Ref. 76854).
Biology:  Found mostly in riffles, rocky bed with pebbles and sand deposits (Ref. 76854).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (123251)
Threat to humans:  harmless
Country info:   

Entered by: Torres, Armi G. - 30.06.08

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